A Research Of Heart Sound Collection And Wireless Transmission Technology Based On Intelligent Mobile Platform

Heart disease is one of the main diseases that menace human's health and life, health hasbecome the focus of attention. Heart sound signals is one of the most importantphysiologic ,which containing large amounts of information about all heart parts such asatrial,ventricular,largebloodvessels,cardiovascular,anditisthemostbasicmethodsofevaluatingheart function condition ,and it is the means of reflecting the heart and large blood vessels.Because heart sounds is the instantaneous fleeting voice in the process of heart activityproduce .If cardiovascular disease can collect and recond pathological heart sounds signal inanytime and any circumstances,it will provide valuable information for patients'choicetreatment,judgementofpathophysiologicalanddoctor'sresearch.Bluetooth is a kind of short-range wireless communication technology that has got rapiddevelopment in recent years.It can replace the cables between different digital devices ,and hasgreat application field in mobile phone and computer peripherals.Applying Bluetooth technologyinto data sample and wireless transmission module can replace the data tranmission cables insystem, and has merits of convenience handle and flexible application, besides it can apply tocomman occasion ,it can also apply to temporary monitor and factory field,so it will get greatapplicationinmedicalfield.The paper researches the mechanism of production of heart sounds and the modern wirelesstransmission bluetooth technology's general situation and development .On the analysis of thedomestic and foreign relevant research, this paper present a method of extracting heart soundsignals envelopment based on Hilbert transformation and wavelet.This method is from theprinciple of Hilbert transformation to extract envelope , and solve anti-interence ability faults ofHilberttransformationmethodbyusingwavelettransformadaptiveanalysisability.Finally this paper complete heart sounds acquisition system's hardware circuit designing ,integrating with micro-controller,bluetooth technology and so on .The heart sound signals ispicked up through the heart sounds sensors,and then send directly to analog signal processingcircuit,takingaseriesofmeasurestofilterouttheinterference,andwillampliytheheartsoundstothe appropriate amplitude,send to A/D converter processing ,and the data through A/D converterprocessing is sent to microcontroller, then a bluetooth module send the data to intelligent mobile platform and preserve. Last on smartphone the software testing of heart sounds real-time dataacquisitonisachieved.